GRAPHIC OVERRIDE *ABOVE AND BELOW* SLAB FILLS

[keene kopper]

I'm trying to create a graphic override that turns the above and below slab fills to transparent, but leaves the hidden line setting for all above slab edges as set in the object, and the below slab edges as a lighter line weight. To reiterate: I'd like the *current* level's floor slab element to have a colored fill, but still have the overhead slab edges be dashed, and the below slab edges as solid, but a different line weight. For example, when the current floor slab has an opening to below, and a below slab edge is visible, that slab edge would be solid, but lighter; and conversely, the above slab edge would be dashed, with a transparent fill. 

I don't see a criteria for "above level" or "below level", just criteria for elevation relative to home, floor, etc.  

Thanks for any help!

Operating system used: Mac Intel-based 14 SONOMA